The files can be shared among workflows and it's intended to keep multiple environments under folder names for instance, this allows to for instance to have a retrofit env for montreal and anotherone for nyc.
In this example, montreal city layers env will be placed in **montreal_citylayers***(%BASE_PATH%/environments/**montreal_citylayers**/.env)* while nyc city layers will be stored in **nyc_citylayers***(%BASE_PATH%/environments/**nyc_citylayers**/.env)*